This paper presents analysis method and key results from dynamic simulations of a drilling riser on 1900 metres water depth after release of upper end. Key results are the geometry of the collapsed riser on the seafloor (footprint) and the impact speed of the riser when hitting the seafloor. The purpose of the study has been to investigate the influence on the results from operational and model parameters such as vessel offset relative to the riser base, current speed, hydrodynamic load model, material model and interaction between the riser and the seafloor. The main conclusion from the study is that most trends from parameter variations are weak and often overshadowed by a more stochastic variation caused by the inherent complexity of the mechanical behaviour during collapse.
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ASME 2004 23rd International Conference on Offshore Mechanics and Arctic Engineering
June 20–25, 2004
Vancouver, British Columbia, Canada
Conference Sponsors:
- Ocean, Offshore, and Arctic Engineering Division
ISBN:
0-7918-3743-2
PROCEEDINGS PAPER
On the Influence From Hydrodynamic Forces on Speed and Footprint for a Falling Riser
Vidar Berntsen,
Vidar Berntsen
Marintek, Trondheim, Norway
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Carl M. Larsen,
Carl M. Larsen
Norwegian Institute of Science and Technology, Trondheim, Norway
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Elizabeth Passano,
Elizabeth Passano
Marintek, Trondheim, Norway
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Nilo De Moura Jorge,
Nilo De Moura Jorge
Petrobras, Rio de Janeiro, RJ, Brazil
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Jose´ Roberto
Jose´ Roberto
Petrobras, Rio de Janeiro, RJ, Brazil
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Vidar Berntsen
Marintek, Trondheim, Norway
Carl M. Larsen
Norwegian Institute of Science and Technology, Trondheim, Norway
Elizabeth Passano
Marintek, Trondheim, Norway
Nilo De Moura Jorge
Petrobras, Rio de Janeiro, RJ, Brazil
Jose´ Roberto
Petrobras, Rio de Janeiro, RJ, Brazil
Paper No:
OMAE2004-51405, pp. 709-715; 7 pages
Published Online:
December 22, 2008
Citation
Berntsen, V, Larsen, CM, Passano, E, De Moura Jorge, N, & Roberto, J. "On the Influence From Hydrodynamic Forces on Speed and Footprint for a Falling Riser." Proceedings of the ASME 2004 23rd International Conference on Offshore Mechanics and Arctic Engineering. 23rd International Conference on Offshore Mechanics and Arctic Engineering, Volume 1, Parts A and B. Vancouver, British Columbia, Canada. June 20–25, 2004. pp. 709-715. ASME. https://doi.org/10.1115/OMAE2004-51405
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